# 8131937 Expansion Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta expansion plug weighing 0.059 kg, listed for 41 applications across the TAD, D and TWD series engines.

## 🚤 Compatibility

-   **Engine Family:** TAD, D, TWD

Full model list at the end of this description.

## ⚙️ Key Features

-   0.059 kg
-   41 applications across TAD, D and TWD engines
-   Seals a machined core hole in the casting
-   4 used per assembly

## 🔌 Function

Seals a machined core hole or drilling in the casting, expanding into the bore to make a tight joint.

## ⚠️ Common Signs of Failure

-   Coolant or oil weeping from the face of the plug
-   Damp staining or salt tracking on the casting below the plug
-   Corrosion or pitting around the plug rim
-   Plug standing proud or feeling loose in its bore
-   Pressure test will not hold when the plug is the only suspect area

## 🛠️ Service Notes

-   Clean the bore fully and fit the plug dry unless the manual calls for sealant
-   Drive the plug squarely to its correct depth so it expands evenly
-   Pressure test the casting before reassembly

## 📦 Condition

-   Genuine Volvo Penta part
-   Brand new
-   Supplied in original or equivalent packaging

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D16C-A MG, D16C-A MH, D16C-B MH, D16C-C MH, D16C1-E MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C-D MH, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
-   Volvo Penta TAD1640-42GE-B, TAD1640GE, TAD1640VE-B, TAD1640-42VE-C
-   Volvo Penta TAD1641VE-B, TAD1641GE, TAD1641VE
-   Volvo Penta TAD1642VE-B, TAD1642GE, TAD1642VE
-   Volvo Penta TAD1650VE-B/51VE, TAD1650GE, TAD1650VE
-   Volvo Penta TAD1643VE-B, TAD1643VE
-   Volvo Penta TAD1651GE
-   Volvo Penta TAD1660-62VE
-   Volvo Penta TAD1662VE EU5
-   Volvo Penta TAD1670-72VE
-   Volvo Penta TWD1643GE
-   Volvo Penta TWD1644-45GE
-   Volvo Penta TWD1652GE
-   Volvo Penta TWD1653GE
-   Volvo Penta TWD1663GE
-   Volvo Penta TWD1672-1673GE
-   Volvo Penta TWD1682-83GE
-   Volvo Penta TWD1683VE
-   Volvo Penta TWD1744GE

## Details

- **Price:** 48.47 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 48.47 AUD | In stock |

## Images

- 8131937 Expansion Plug | Genuine Volvo Penta Part
- 8131937 Expansion Plug | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8131937-expansion-plug-genuine-volvo-penta)
> Updated: 2026-10-12